I was provided this information by BlueSwordM, and I thought I'd save it here and make it public aswell.
These are all of the packages you'll need and you can install them with these commands:
sudo pacman -S rocm-opencl-runtime rocm-hip-runtime rocm-opencl-sdk rocm-hip-sdk
sudo pacman -S --needed mesa lib32-mesa vulkan-radeon lib32-vulkan-radeon vulkan-icd-loader lib32-vulkan-icd-loader vulkan-mesa-layers rocm-smi-lib rocm-clang-ocl rocm-dbgapi rocm-gdb rocm-smi-lib hip-runtime-amd rocm-core rocm-device-libs rocm-llvm rocm-opencl-runtime